Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6048188 | Stereolithographic curl reduction | Charles W. Hull, Stuart T. Spence, Charles W. Lewis, Raymond S. Freed, Dennis R. Smalley | 2000-04-11 |
| 5772947 | Stereolithographic curl reduction | Charles W. Hull, Stuart T. Spence, Charles W. Lewis, Raymond S. Freed, Dennis R. Smalley | 1998-06-30 |
| 5273691 | Stereolithographic curl reduction | Charles W. Hull, Stuart T. Spence, Charles W. Lewis, Raymond S. Freed, Dennis R. Smalley | 1993-12-28 |